I'm looking to stack a toytec 1/4" spacer on top of my existing 1/2" toytec spacer. I want to do this to correct the net 1/2" driver side sag.

The issue I'm running into is that the studs that came with my existing 1/2" spacers are not long enough to accommodate the addition of the 1/4" spacer.

Toytec doesn't make top plate spacers thicker than 1/2" so they don't have longer studs that I can buy. I looked at Daystar but their stud design is different so their studs won't work with toystec spacers.

Any suggestion on where I can find studs that would fit the stacking of these spacers?

I found the following thread on stacking these exact spacers, but there's no details about studs:

Stacking Spacers - Good Idea?

My last option would be to go with only the 1/2" spacer on driver side and only 1/4" on passenger side. This also corrects the driver side sag but would lose me 1/2" of lift in the front.

My current set up is FJ springs/shocks on 2006 4runner 4WD V6, with 1/2" thick toytec spacers in front.

Wheelers off-road sells both extended studs as well as spacers larger than 1/2", check them out before you try anything out

Sounds to me like you should swap your front springs around, may correct it! What I had to do with mine!

May need to swap springs. I just did the taco set up and do not have the lean but I made sure which was the driver side. If you do decide to stack the spacers the toytec studs are plants long enough for the two. I was actually going to stack them if I need more height in the front but I didn't need it.

Thanks everyone for the tips. After verifying that I have the front springs on correctly (yellow/green on driver side), I went with extended studs from Wheelers off-road and stacked a 1/2" spacer on the driver side to correct the sag.

The final measurements are 35.5" front (+/- 1/8") and 36.5" rear (+/- 1/4")